Calculating machine



March 14, 1933. H. LANDSIEDEL CALCULATING MACHINE Filed March 5l, 1924 5SheecS--SheeI l WWWWMWMWMWWWMWW March 14, 1933. H. LANDSIEDEL 1,901,372

CALCULATING MACHINE Filed March 51, 192A 3 Sheets-Sheet 2 March 14,1933. H. LANDSIEDEL CLCULATING MACHINE 1924 3 Sheets-Sheet 3 Filed MaICh3l,

/f/S A TTG/mf KS.

Patented Mar. I4, 1933 UNITED STATES PATENT OFFICE HARRY LANDSIE'DEL, OFNORWOOD, OHIO, ASSIGNOR, BY MESNE ASSIGNMENTS, TO REMINGTON RAND INC.,OF NEW YORK, N. Y., A CORPORATION OF DELAWARE CALCULATING MACHINEApplication filed March 31, 1924. Serial No. 703,101.

I This invention relates to calculating machines, and has specialreference to mechanism for printing dates or other designations inconnection with amounts that are listed by operation of the calculatingmachine.

An object of the invention is to provide a calculating machine with keymechanism operable to control the operation of the date printing devicesindependently of the usual numeral keys of the machinethat are used insetting up numbers for various calculations.

Another object of the invention is to provide mechanism for controllingthe operation of the date printing devices so that said devices may berepeatedly operated to print a date repeatedly or successively after asingle operation of the devices for setting up the date in the machine.

Another object of the invention is to provide means for protecting thedate setting keys against accidental operation or -release so that themachine may be operated to print a date successively or repeatedly.

Another object of the invention is to equip a calculating machine withdate printing devices the parts of which, except the differentialcontrolling mechanism thereof, are duplicates of corresponding parts ofthe usual listing mechanism of the machine.

Another object of the invention is to provide a calculating machine withdate or designation printing mechanism under control of the usuallaterally movable paper carriage so that in certain predeterminedadjusted positions of the paper carriage the date printing mechanism isoperative and in other positions of the paper carriage the date printingmechanism is inoperative.

Other objects will appear from the following description, referencebeing made to the drawings in which l Fig. 1 is a longitudinal sectionalview of a calculating machine embodying my present invention and showingvarious elements of the invention in side elevation.

Fig. 2 is a rear end view of the present invention embodied in acalculating machine.

Fig. 3 is a reduced plan view of the keyy board and certain of theoperative parts of the machine.

Fig. 4 is an enlarged plan view of the key board with parts broken away.

Fig. 5 is a side elevation of the mechanism shown in Fig. 4, the case ofthe machine being shown in section.

Fig. 6 is a perspective view showing details of the key structure.

The adding and listing machine selected as the basis for the embodimentofthe invention will be recognized as the Dalton adding machine in whichthe usual key levers 1 are operable to set up numbers in thedifferential mechanism 2 which limits operation of the racks 3operatively connected with type carriers 4; type 5 being supported bythe type carriers and driven in printing operations by hammers 6 set andreleased in the usual familiar manner to drive the type to makeimpressions upon paper fed to the type carriers by a platen 7 in alaterally movable paper carriage 8. The usual adding pinions 9 areshown. The racks 3 and type carriers 4 are suspended from a rock shaft10 having arms 11 attached thereto supporting a transverse bail rod 12for holding the type carriers and racks in their idle or normalpositions. It is well known that the rocking of the main rock shaft 13of the Dalton adding machine controls the machine proper and that, uponforward turning movement of said rock shaft, the bail 11-12 is swungdownwardly and forwardly to permit forward movement of the type carriersand racks and upon return turning movement of the shaft 13 the bail11--12 is operated to restore the type carriers and racks to theirstarting positions.

The machine in which the invention is shown will be recognized as aDalton adding machine'in which the key levers 1 are ten in number, andin which the differential mechanism 2 is a carriage which moves fromlower to higher denominational vorders when the key levers 1 areoperated. Each key lever 1 may be operated to set up one or more digitsin the differential mechanism.

The present invention is adapted and shown embodied in such a machine.Toward printing type carriers 4 forwardly to printing position. Exceptin selected lateral adjusted positions of the paper carriage 8 theslides 16 and the date or designation printing type carriers operativelyconnected therewith are held from movement to zero printing position byabutments 20 suspended from a shaft 21. Said abutments extend underprojections 22 on the slides 16. A lever 23 is connected up with theabutments 2() and is actuated by a spring 24 in a direction to hold theabutments 20 in position to engage the projections 22 (Fig. 1). A bar 25in the laterally adjustable paper carriage 8 supports one or moreadjustable cams 26 arran ed to engage a roll 27 on the forward end of te lever 23 and thereby depress the forward end of said lever and movethe abutments 2O out of the way of the projections 22. The cam or cams26 may be adjusted in different positions along the bar 25 to obtaindesired variation in operation. rIhe printing hammers of the date ordesignation printing type carriers are operated and controlled in thesame manner as the other printing hammers.

The differential mechanism for limiting operation of the date ordesignation printing type carriers is best shown in Figs. 4, 5 and 6. Asthere shown a plate 28 is attached to the forward end of the machinebase 29 and supports the key and differential mechanism for controllingoperation of the date and designation printing type carriers. A shaft 30is supported by depending parts 31 of the plate 28. Each end of theplate 28' has an upward extension 32 (shown in Fig. 1 and broken away inFigs. 4 and 5) in which a shaft 33 is supported; Two sets of key le-Vers are pivoted upon the shaft 33, the set of levers 34 being used forprinting the digits in tens denominational order in dates and otherdesignations, and the levers 35 being used for printing the digits inunits denominational order in dates and other designations. The keylevers 34 are normally held in and after operation are returned to theirraised positions by springs 36, and the key levers 35 are similarlycontrolled by springs 37. Each of the key levers 34 has an angulardownwardvextension 38 (Fig. 6) similar to the angular downwardextensions 39 of the key levers 35. The shaft 30 pivotally supports alatch plate 40 which extends under the forward ends of the key leverextensions 38. A similar plate 41 is supported by the shaft 30 andextends under the key lever extensions v39 and is upheld by a spring 42.Each of the plates 40 and 41 is provided with holes 43. When any keylever is depressed it lowers the corresponding plate 40 or 41 until theangular extension of the key lever enters one of the holes 43, afterwhich the spring 42 raises the plate, which thereby latches thedepressed key lever in its depressed position.

The plate 40 has a depending projection 44 over a lateral extension 45of the plate 4l. This permits the plate 4l to be operated independentlyof the plate 40 and also causes operation of the plate 41 when the plate40 is depressed byoperation of any one of the key levers 34. All of thekey levers operate on the flexible principle, so that when any key leverof either series is depressed any previously depressed key of the sameseries will be released and returned to its raised position by itsspring 36 or 37 as the case may be. Also, when any one of the key levers34 is depressed any previously depressed key lever 35 is released. I

A slide 46 for the series of key levers 34 has pin in slot connection 47with the plate 28, and a similar slide 48 for the series of key levers35 has pin in slot connection 49 with the plate 28. The slides 46 and 48are actuated forwardly by springs 5.0. A slide 51 is held on the slide46 for lateral movements by connections 52, and a similar slide 53 isheld on the slide 48 for lateral movements4 by connections 54. Theslides 51 and 53 are movable transversely of the planes of movement ofthe type carriers and parallel with the shaft 10. The slide 5l has aseries of projections 55 thereon for engagement with the angularextensions 38 of the key levers 34 when the machine is operated to printdates or other designations. The slide 53 has projections 56 forengagement with the angular extensions 39 of the levers 35. A lever 57has pin in slot connection 58 with the slide 51 and at its rear end hasoperative connection 59 with the lower arm of a bell crank lever 60(Fig. 2). The other arm of the bell crank lever 60 has operativeconnection 61 with the slide 16 in the highest or tens denominationalorder. A lever 62 has pin in slot connection 63 with the slide 53. Therear end of said lever 62 has operative connection 64 with the lower armof a bell crank lever 65, the other arm of which has operativeconnection 66 with the slide 16 in the lower or units denominationalorder.

When the key levers 34 and 35 are held in their raised positions by thesprings 36 and 37 the lever extensions 38 and 39- are in front of theline of movement of the projections 55 and 56 on the slides 51 and 53.This leaves the slides 51 and 53 free to move laterally toward eachother, without obstruction by the extensions 38 and 39. s previouslymentioned, the date or designation printing type carriers are held fromeffective movement at all times, eX- cept in predetermined lateraladjusted positions of the paper carriage in which one of the cams 26holds the lever 23 depressed and thereby holds the abutments out of theline of movement of the projections 22. Even when the abutments 2O areheld out of the way of the projections 22 the date or designationprinting type carriers cannot movebeyond zero printing position, unlessone of the key levers 34 be operated when the date or designationsincludes two digits and unless one of the key levers 35 be operated whenthe date or designation includes a vsingle digit. That is, if the dateor designation to be printed is not more than 9, one of the key levers35 is depressed. Thereafter, when the machine is operated to turn theshaft 13 forward and back and to swing the bail 11-12 forward and back,the date or designation printing type carrier in units denominationalorder is moved forwardly by its spring 19 until one of the projections56 on the slide 53 contacts with the extension 39 of the lever 35 thathad been depressed and held in its depressed position by the latch plate41. The relationship of the key levers 35 representing the differentdigits is the same as the relationship of the type upon the date ordesignation type carrier in units denominational order. It is notnecessary, nor is it always desirable that the type upon the date ordesignation printing type carrier be arranged in sequence as are thetype upon the usual listing type carriers; but the type upon the date ordesignation printing type carrier is arranged so that when one of theprojections 56 contacts with any designated key lever 35 the type thatwill be presented at the printing line will be the same as the typeshown on the operatedl key lever.

The control of the slide 51 by the key levers 34 is the same as thecontrol of the slide 53 by the key levers 35 as above described. Whenthe date or designation includes two digits it is,Y of course, necessaryto depress one of the key levers 34 which is latched in its depressedposition by its latch plate 40. If the date or designation is 10, or 20,or for insta-nce, it is not necessary to depress any one of the keylevers 35, since the date or designation printing type carrier in unitsdenominational order will be stopped in Zero printing position bycontact of one of the projections 56 with the zero stop 67 (Fig. 4). Asit is understood that the operation of the type driving hammers 6 inlower denominational orders is controlled by the operation of a hammeror hammers in higher denominational orders, it is clear that when thehammer for the date or designation printing type carrier in tens orderoperates the hammer for the date or designation printing type carrier inunits order will also operate. The zero stop 67 is pivoted on the shaft33 and is engaged and controlled by a swinging bail comprising a rod` 68carried by two arms 69 pivoted on the shaft 33 and normally upheldagainst the .under edges of the key levers by a spring 70. When any oneof the key levers 35 is depressed the rod 68-is moved rearwardly adistance suicient to raise the lower end of the zero stop 67 above theplane of the slide 53, so that said slide may move into engagement withany one of the depressed key levers 35 without obstruction by the zerostop 67.

The slide 51 is also provided with azero stop 71 pivoted on the shaft33. This stop 71 is engaged and controlled by a bail comprising a rod 72and arms 73 swinging from the shaft 33. The rod72 is normally upheldagainst the under edges of the key levers 34 by a spring 74 in whichposition the Zero stop will prevent effective movement of the slide 51.When any one of the key levers 34 is depressed the supporting bail onthe stop 71 is operated to raise the lower end of the stop above theplane of the slide 51.

The mechanism may be controlled so that the key levers 34 and 35 will bereturned to their raised positions at each operation of the machine. Forthis purpose a lever 75 (Fig. 1) is pivoted upon a support 76 and hasits forward end above the end of the latch plate 4() (Fig. 4), so thatwhen the rear end of said lever 75 is raised the latchplate 40 will bereleased from any of the key levers 34 and .will also release the latchplate 41 from any ofthe key levers 35. A wipe pawl 77 is `upon the rearend of the lever "75 in line of movement of the projections 7 8supported by a part 79 on the main rock shaft 13. The. spring 8Oholdsthe wipe pawl 77 in position for cooperation with the projection78, the

lug 81 on the wipe pawl engaging the lever 75. During forward turningmovement of the rock shaft 13 the projection 78 operatesv the wipe pawl,77 on; its pivot until the projection 78 passesIbweyondthe wipe pawl 77without disturbing the lever 7 5. During rej turn movement of the rockshaft 13 the prof'-l `jection 78 by `engagement with the pawl 77operates ythe lever 75 to release the latch plates 40 and 41 from thekey levers 34 and 35.

In case it is desired to repeat the same date or designation the Wipepawl 77 is moved to and retained in position in which it will not beengaged by the projection 78. This is accomplished by setting a bellcrankflever 82.

The upper end of the bell crank lever extends through the key boardplate of theymachine and the rear end of the lever extendsto position toengage the wipe pawl 77. `When the upper end of the lever 82 is movedforwardly the wipe pawl 77 will be moved to ak position in which it willnot be engaged by the projection 78. A latch projection 83 on the upperarm of the lever 82 is engageable with notches 84 in the key board plateof the machine to positions.

hold the lever 82 in' its different adjusted Any error in setting thekeys 34 and 35 may be corrected, or said keys may be released withoutoperating the machine. For this purpose a key lever 85 is pivoted uponthe shaft 33 and hasan extension 86 that engages and operates the latchplate 40 when said lever is depressed. The extension 86 acts upon theplate 40 to depress said plate in the same manner as the key extensions38. The latch plate 40 will thereby be released from any of the keylevers 34 and, because of the connections @1 -45, will also release thelatch plate 4l from any of the key levers 35. The key lever 85 is heldin its raised position by a spring 87.

When any of the key levers 34-35 are set and the lever 82 is set forrepeating, said key levers 34 and 35 may be protected frombeing'accidentally released and so thatl no other keys may be depressed.For this purpose a cover 88 is pivotally supported by a pair of brackets89 secured to the front of the machine. The cover 88 extends the fullWidth of the machine and in Fig. 5 is shown above the series of levers34-35--85 so that d al1 of said leversare protected from accidentaloperation. When it is desired to expose the key levers it is onlynecessary to swing the cover 88 forwardly and downwardly out of the way.

The differential mechanism for controlling the date or designationprinting type carriers is arranged in such cooperative relationship withthe differential mechanism 2 that controls the usual listing typecarriers of the machine, that the dates or designations will be printed'in alinement with any items printed by the usual item listing typecarriers and at the same operations. Of course, the hammers 6 thatcooperate with the date -or designation printing type carriers do notcarrier, a laterally movable paper carriage, a

device preventing operation of said type carrier, means controlled bythe paper carriage for operating said device to position to permitoperation of said type carrier, a diil'erential device for limitingmovement of said type carrier, and a series of keys settable forengagement by said differential device.

2. A calculating machine comprising a number of type carriers, anactuator for each type carrier, a slide operated by each of saidactuators, projections on said slides, a series of keys corresponding toeach of said type carriers, means for latching said keys in setpositions to be engaged by said projections, and means operated by oneseries of keys to re ease the other series of keys.

3. A calculating machine comprising type carriers, arranged indenominational orders, an actua-tor for each of said type carriers,differential stop devices for each of said type carriers, a series ofkeys for the type carrier of each denomination order, latches for holding said keys in set positions, and means operated by the keys for atype carrier in a higher denominational order for releasing the keys forthe type carrier in the next adjacent lower denominational order.

4. A calculating machine comprising type carriers arranged indenominational orders, j

stops settable to limit movement of said type carriers, and means forunsetting a. stop for a type carrier in one denominational order as anincident to the setting of a stop for a type carrier in a higherdenominational or- 5, The combination with a pivoted type carrier, anactuator for said type carrier, a differential device, keys for settingsaid diierential device, and connections operated by said actuator tocooperate with said 4differential device to limit extent of movement ofsaid actuator and said type carrier, of a pivoted element for holdingsaid actuator from effective movement, a support movable to differentadjusted positions, and a part selectively settable on said support foroperating said element in selected positions of said support to permitoperation of said type carrier by said actuator.

6. A machine of the character described comprising a pivoted typecarrier, an actuator for moving said type carrier, a slide operativelyconnected with said type carrier for movement in a diection transverselyof the plane of movement of the type carrier and parallel with the axisof the type carrier pivot, a number of projections on said slide, andkey controlled elements arranged in a row para l'el with the plane ofmovement of said slide settable to be engaged by said projectionsrespectively to stop said type carrier in difierent printing positions.

7. A machine of the character described comprising a pivoted typecarrier, an actuator for moving said type carrier, a slide operativelyconnected with said type carrier for movement in a directiontransversely of the plane of movement of the type carrier and parstopsto position to be engaged by said projections respectively, and latchingmeans for holding said stops in position to be engaged by saidprojections.

8. In a calculating machine a type carrier, a shaft on which said typecarrier is pivoted, a longitudinally movable slide, a link supported byand connecting said slide and said type carrier, an actuator for movingsaid slide and said type carrier, a lever operatively connected withsaid slide, an element operated by said lever in a direction parallelwith the axis of said shaft, a number of projections on said element,stops movable to and from position to be engaged by said projections,respectively, keys for operating said stops, and means for holding saidstops in position to be engaged by said projections.

9. A calculating machine comprising a units printing device, a tensprinting device, a shaft on which said printing devices are pivoted, anactuator for each of said printing devices, a differential plateoperatively connected with each of said printing devices for movementthereby in planes A parallel with the axis of said shaft, and stops forlimiting movements of said plates, respectively.

10. A machine of the character described comprising a units printingdevice, a tens printing device, a shaft pivotally supporting saidprinting devices, a differential plate for each printing device movableparallel with said shaft and transversely of the planes of movement ofsaid printing devices, a set of keys for cooperating with one of said rplates for stopping said plate in different positions, and another setof keys for stopping the other plate in its different positions.

11. A calculating machine comprising a pair of type carriers, a shaft onwhich said type carriers are pivoted, means for operating said typecarriers, a slide operated by each of said type carriers parallel withsaid shaft, projections on each of vsaid slides, key levers, and meansfor latching said levers in position to be engaged by said projections.

12. A calculating machine comprising type carriers, a shaft on Whichsaid type carriers are pivoted side by side, mechanism for operatingsaid type carriers, a slide for each type carrier operated by saidmechanism parallel with said shaft, projections on each of said slides,a set of key levers for each of said slides, a latch device for each setof key levers for holding said levers in position to be engaged by saidprojections, and automatic means for releasing said devices.

13. A calculating machine comprising type carriers, a shaft on Whichsaid type carriers are pivoted side by side, mechanism for operatingsaid type carriers, a slide for each type Icarrier operated by saidmechanism parallel with said shaft. projections on each of said slides,a set of key levers for each of said slides, a latch device for each setof key 65 levers for holding said levers in positionio 15. A calculatingmachine comprising a I type carrier, a shaft on Which said type carrieris pivoted, a device for operating said type carrier, a slide operatedby said device parallel with said shaft, a number of projections on saidslide, and a series said slide settable to be engaged jections.

16. A calculating machine comprising a pair of type carriers, a shaft onwhich said type carriers are pivoted, an actuator for each of said typecarriers, a slide operated by each of said type carriers parallel withsaid shaft, projections on each of said slides, a series of keys foreach slide settable to be engaged by said proby said projections, meansfor holding said Y keys in their set positions, and means for releasingsaid keys.

17 A calculating machine comprising a number of type carriers, a shafton which said type carriers are pivoted, an actuator for each typecarrier, a slide operated by each actuator parallel with said shaft,projections on each of said slides, a series of keys corresponding tocach type carrier, and parts settable by said keys in positions to beengaged by the projections on the corresponding slide.

18.V A calculating machine comprising a number of type carriers, a shafton which said type carriers are pivoted, an actuator for each typecarrier, a slide operated by each of keys for Y actuator parallel withsaid shaft, projections 'latching devices for holding said parts intheir set positions, and means for releasing said latching devices.

19. A calculating machine comprising a shaft, type carriers pivoted onsaid shaft in denominational orders, an actuator for each of said typecarriers, a row of differential stop devices parallel with said shaftfor each of said type carriers, a series of keys settable to cooperatewith said stop devices to limit extent of movement of each type carrier,and latches for holding said keys in set positions. j

20. A calculating machine comprising a shaft, type carriers pivoted onsaid shaft in denominational orders, an actuator for each of said typecarriers, a rou7 of differential stop devices parallel with said shaftfor each of said type carriers, a series of keys settable to cooperatewith said stop devices to limit extent of movement of each type carrier,latches for holding said keys in set positions, a device for releasingsaid latches during operation of said type carriers, and means operableat the will of the operator for releasing said latches While said typecarriers remain unoperated.

21. A calculating machine comprising a shaft, type carriers pivoted onsaid shaft in denominational orders, an actuator for each of said typecarriers, a row of differential stop devices parallel with said shaftfor each of said type carriers, a series of keys settable to cooperateWith said stop devices to limit extent of movement of each type carrier,latches for holding said keys in set position, and a device forreleasing said latches as an incident to the operation of said typecar-A riers.

22. A calculating machine comprising a shaft, type carriers pivoted onsaid shaft in denominational orders, an actuator for each of said typecarriers, a row of differential stop devices parallel With said shaftfor each of said type carriers, a series of keys settable to cooperatewith said stop devices to limit extent of movement of each type carrier,latches for holding said keys in set position, a device for releasingsaid latches as an incident to theoperation of said type carriers, andmeans for preventing release of said latches, as desired. 4

` HARRY LANDSIEDEL.

